Inventory system

Hi,
I am currently creating inventory system and I have it stored in save file and in memory of game in list, like list[0] = 10 (10 x “0” items). I want to create inventory that looks something like this

    x   x   x   x   x   x
    x   x   x   x   x   x
//<buttons for left||right>

//or maybe swipe

//or scroll bar/swipe for up/down is also good

I am interested how to show to player that inventory (x represents image of object and number of objects). I thought about creating 10-20 (how much can go to screen) images and change them based on page of inventory or something like that.

Any kind of tutorial or explanation is welcome. I searched but without succes

There is a free inventory system available in the Asset Store.